Knockdown paper box with cover



3 Sheets-Sheet 1 INVENTOR ATTORNEY Dec. 19, 1933. R, A GRQss KNoGlgvowN PAPER BOX WITH cQvER mea Nov. 1'1. les

Dec. 19, 1933. R. A. GRoss KNOCKDOWN PAPER BOX WITH COVER Filed NOV. `1l. 1930 5 Sheets-Sheet 2 l I l l l l l I l l l l l Dec. 19, 1933. R. A. GRoss KNOCKDOWN PAPER BOX WITH COVER Filed Nov.

11. 1930 3 Shets-Shee't 3 NTOR ATTORNEY Patented Dec. 19, 1933 UNITED STATES PATENT OFFICE 1,940,213 KNocxnowN PAPER Box WITH covEn Application November 11, 1930 Serial No. 494,831

6 Claims.

of the United States filed January 11, 1929, Se-

rial No. 331,842.

The object of my present invention is to provide an instantly erectable knockdown'paper box of the general type illustrated in my former PatentNos. 1,690,109 dated November 6th, 192s,

1,758,510, dated May 13, 1930 and 1,758,513, dated May 13, 1930, with a hinge cover preferably formed integrally with one of the main side sections of thebox blank, the construction being such that in the knockdown position of the box in which it is to be stored, shipped or transported, a considerable portion oi' the cover, equaling an area of the side section to which it is hinged, will lie upon the adjacent side section, so that the cover will not project for any thing like its entire width from the knockdown blank, the locking end folds being also infolded upon the corner sections of the box, and in some instances extending over the side sections and cover, so that the knockdown boxes with cover when piled upon each other for shipment will form a compact package. My invention also includes certain novel features for eecting the locking of the box in erected position.

My present invention also includes the provision of an exterior nap on the cover and aligned folding scores adjacent to the ends of the cover and parallel with the hinged edge, and the died-out display portion between the inner ends of said scores and the hinged edge of the cover, whereby the cover may be folded upon said folding scores and brought into engagement with the adjacent side wall to bring the outer face of the display portion into vertical position and be locked therein by the infolded end locking sections when the box is used for the display of its contents.

My invention also includes certain novel features of construction and combination of parts hereinafter described, and more particularly pointed out in the claims. y

Referring to the accompanying drawings,

Fig. 1 is a plan View of one form of my improved box in the knockdown position.

Fig. 2 represents a sectional view of the same on line 2-2 of Fig. 1.

Fig. 3 represents a. view similar to Fig. 2, showing a box having side iiaps, the combined width of which is greater than the width of the bottom of the box. y

Fig. 4 is a view partly in section, showing the (Cl. 22S- 34) box of Figs. 1 and 2, erected, dotted lines indicating an -intermediate position of the end locking sections after the box is erected and before it is locked in erected position.

Fig. 5 is a plan view of the erected box shown in Fig. 4.

Fig. 6 is a view similar to Fig. 4 showing the cover folded against the adjacent side wall and locked for display purposes.

Fig. 7 is a plan view of the blank from which the box is made.

Fig. 8 is a view similar to Fig. l, showing a box having a cover provided with end aps and slightly different locking means.

Fig. 9 is a partial top plan view of the 'box shown in Fig. 8, in the erected position.

Referring first to Fig. 7, which shows the preferred form of integral blank from which my improved box is made, 1, represents the bottom section,rprovided with integral side sections, 2, 2, and end sections, 3, 3, and corner sections, each of which is integral with the adjacent side and end sections and is divided by a diagonal score, 8, into two infolding sections, 9 and 10. Each of the end sections, 3, is provided adjacent to its outer edge with a main locking section, 4, at the outer edge of which is an auxiliary locking section, 5. The main locking sections, 4, are preferably provided at opposite sides with outwardly projecting portions, indicated at 4m, which extend laterally beyond the other wedging portions, and each of the auxiliary locking sections, 5, is provided at each end with a lateral projecting portion, 5m. It will be understood that the various sections of the blank are deiined by score lines, which are indicated at 2a, 3a, 4a and 5a in Fig. '7. In order to stifien the box along the front side, and also to facilitate the locking of the box in the erected position, the side section, 2, which is not connected with the cover, is preferably provided with an integral inner wall section, 12, which is preferably folded over upon the adjacent side section, 2, andpermanently glued thereon along its extreme edge, leaving the portion between said edge and the dividing score, 12a, free. The end portions of the section, 12, are also out away forming locking members, as indicated at 129:, to facilitate engagement with the adjacent locking portions, 4x, ofthe main locking section, after the box has been erected. The other side wall, 2, which is ordinarily a single wall, is formed integrally therewith, and hinged thereto along the score line 13a. A cover, 13, which is conveniently provided at its outer edge, with an integral infolding flap section, 14, separated from the main cover by the score, 14a, is preferably formed integrally with the side member, 2, of the blank. The cover, 13, is preferably provided lat opposite sides with aligned scores, 15, 15, kparallel with the score, 13a, and between the inner ends of these scores, is a died out portion. 13b, which may have any preferred form and 5 which extends between the line of the scores, 15, and the hinge score, 13a, and is defined by a score or cut, 13c. That is to say, the line indicated at 13o, may be either pressed or scored into the o cardboard of the box cover sufiiciently so that 1 sired, or it may be cut entirely through as preferred.

The blank being formed as shown in Fig. 7,

l theauxiliary side section, 12, is folded over upon are then folded over' upon the bottom, thereby carrying the corner sections over upon the end sections, 3, as will be clear, in Fig. 1, and the triangular folds, 9, connected with the end sections are permanently secured to the end sections by spot gluing, as indicated, or by stitching, or other means. as above stated, the cover, 13, is folded backward or outwardly, as clearly shown in Fig. 1, so that it overlies the adjacent side section, 2, and when the corner sections, 9, are secured to the end sections, the side members, 2, will be held folded position, thus also holding the cover down upon the adjacent side section and the bottom. The main and auxiliary end secf tions, 4 and 5, are then folded over upon the end sections, 3, and mayoverlap, as shown in Fig. 1, upon the'side sections and cover. This is the knockdown form of the box in which it is to be stored or shipped, and in which it remains until it is to be erected and filled, and it will be seen that the boxes in this knockdown position can be formed in convenient piles or packages, and that as the cover of each box lies in considerable part within the'conilnes of the box itself, this type oi box takes up very little more room than it would if the cover were not attached while it possesses the advantage of cheapness and a permanent relation between the box and cover, in addition to the display feature hereinafter referred to. In some instances the dimensions of the box may be such that the combined widths of the side sections is greater lside section willl overlap the other, as seenin Fig. 3, and by rst folding the side section to which the cover `is attached, the other side section will also press on the cover and assist in holding it at.

When it is desired to use the box, the operator places one hand at each end and by an almost instantaneous operation, erects the end sections, 3, which, by reason of the connection between the end flaps and side naps through the infolding corner sections, 9, 10, will erect the side sections, and the box is instantly locked by forcing the n main and auxiliary locking sections down into the box. These main and auxiliary locking sections, 4 and 5, will automatically 'assume the posivtion indicated in Adotted lines in Fig. 4, on the -erection of the side and end@ sections, and it is -only necessary to swing them `into locked position with the thumbs (or fingers) to instantly lock the box in the erected position. When so locked, the main locking sections will fold upon the infolded corner sections, and the locking projections, 41, will frictionally engage the side walls. Where the front section, -2, is provided with the inturned section, l2, the adjacent locking porthe portion, 13b, can be broken loose when dethe adjacent section, 2, and permanently secured, as previously described. The side members, 2

When the side sections are foldedv than the width of the bottom, in which case one.

tions, 4:, will slip past the ends, 12;, and interlock therewith, as will be readily understood. The locking projections, 4x, at the other ends of the end sections, 4, will frictionally engage the other side sections which will ordinarily be a single wall and therefore will have no locking shoulders (as 12x) The auxiliary locking sections, 5,5, (which in some instances may be omitted if desired) engage the bottom of the box as shown in Fig. 4, and the wedging projections, 5x, thereof, frictionally engage the side sections, 2, of the box. This produces a wedging tension across the auxiliary locking sections, 5, and may in some instances produce an almost infinitesimal and always negligible buckle of the paper. It will be seen that the side walls, whether single or double, are positively held against spreading apart at the bottom by their union with the bottom section, and at the top or outer edges by the infolding corner sections, so that the tension across the box at the ends due to the frictional engagement of the locking portions, or auxiliary bottom engaging locking portions, or both, with the side walls cannot spread the' side walls apart, and the side walls cannot be spread apart by the pressure of the contents or otherwise so as to release the locking frictional engagement of the side walls with the main or auxiliary locking sections. I have /illustrated this very slight buckling of the paper at 5s in Fig. 5, for example, which represents a top plan view of the box erected as in Fig. 4, to indicate the wedging stress which results from the frictional wedging locking engagement of the sections, 5, 5, with the side walls. If the box is being packed for shipment, it is only necessary to fold down the flap 14, on the score, 14a, after the contents is inserted in the box, and depress the cover, slipping the flap, 14, between the contents and the front wall of the box.

It will be understood that the exterior of the box cover will be provided with advertising matter which may be directly printed thereon. If now, the merchant is desirous of exhibiting the contents of the box without removing it, the cover may be folded upon the aligned scores, 15, and the display portion, 13b, separated along the cut or score, 13e, from the adjacent portion of the cover, the outer portion of the cover being then folded down in a vertical position against the hinged portion of the cover and against the adjacent side section of the box, and between said side section and the locking projections of the infolded end locking sections, 4, as clearly shown in Fig. 6. This will bring the advertising on the outside of the cover including the display portion, 13b, into view, directly in rear of the contents of the box, thus providing a display card without additional expense and without any additional part. When the articles so displayed are sold, the cover can be simply straightened out and folded 'upon the v box to enclose the contents, as previously described.

In Figs. 8 and 9, vand 9a, I have illustrated another embodiment of my invention which differs in a few particulars from that previously described. In these figures, in which corresponding parts are indicated by corresponding numerals with the addition of 100the cover, 113, is not shown as provided with' the display feature, and is shown as provided with end folding flaps,

, 125, 125, in addition to the outer side ilap, 114.

In these figures, also, the front side section, 102, is provided with an vinifolding section, 112,which extends to the bottom, 101, of the box and is provided with a bottom engaging flap, 116, perma- 1.50

nently secured by gluing or otherwise to the bottom. This bottom engaging ilap, 116, is beveled at both ends, one end being so shown in Fig. 9, at 117. The -auxiliary end locking sections, 105, 105, are in this instance provided at their forward ends with a bevel, 118, to interlock with the bevels, 117, in the erected position of the box, the opposite ends of the sections, 105, being provided with frictional wedging projections, 105x, previously described.

What I claim and desire to secure by Letters Patent is:

1. An instantly erectable knockdown paper box comprising a bottom section, integral side and end sections and corner portions integral with the adjacent side and end sections, and each divided into sections by diagonal scoring to permit said corner sections to infold upon each other and upon the adjacent end sections and thereby positively prevent the spreading apart of the outer edges of the opposite side sections adjacent to the end sections, said end sections being provided at their outer ends with end locking sections hinged thereto, and foldable over said infolding corner sections, and provided with laterally projecting locking wedge portions for eiecting a frictional and wedging engagement with the adjacent side sections adjacent to the ends of said side sections in the erected position of the box.

2. An instantly erectable knockdown paper box comprising a bottom section, integral side and end sections and corner portions integral with the adjacent side and end sections, and each divided into sections by diagonal scoring to permit said corner sections to infold upon each other and upon the adjacent end sections and thereby positively prevent the spreading apart of the outer edges oi' the opposite side sections adjacent to the end sections, said end sections being provided at their outer ends with end locking sections hinged thereto, and foldable over said infolding corner sections, said locking sections being each provided at its outer edge with a bottom engaging locking section ot slightly greater width than the bottom section, and providing end wedge portions i'or effecting a frictional and wedging engagement with the opposite side section adjacent to the union of said side sections with the bottom section.

3. An instantly erectable knockdown paper box comprising a bottom section, inegral side and end sections, and corner portions integral with the adjacent side and end sections and each divided into sections by diagonal scoring to permit said corner sections to infold upon each other and upon the adjacent end sections and thereby positively prevent the spreading apart of the outer edges of the opposite side sections adjacent to the end sections, said end sections being provided at their outer ends with end locking sections hinged thereto, and i'oldable over said infolding corner sections, said locking sections being each provided at its oute'r edge with a bottom engaging locking section oi' slightly greater width than the bottom section, and providing end wedge portions for efi'ecting a frictional and wedging engagement with the opposite side section adjacent to the union of said side sections with the bottom section, the material of said bottom engaging locking sections 'being capable of buckling betweentheir lateral portions to prevent distending the side-sections of the box.

4. An instantly erectable knockdown paper box comprising a bottom section, integral `side and end sections, an auxiliary inleiding side section integraiwithoneotsaidsidesectionaacoversection united hingedly to the other side section, and corner portions integral with adjacent side and end sections and each divided into sections by diagonal scoring, to permit said corner sections to infold upon each other and upon the adjacent end section, to positively prevent the spreading apart of the outer portions of the opposite side 'l sections adjacent to the end sections.. said end sections being provided at their outer ends with end locking sections hinged thereto and foldable oversaid infolding corner sections in the erected position of the box, each of said locking sections being provided with locking wedge'portions for effecting a frictional and wedging engagement with the opposite side sections adjacent to the infolding corner sections, said auxiliary infolding side section being cutaway at each end to provide a locking shoulder to interlock with the adjacent ends of said locking sections.

5. An instantly erectable -knockdown paper box comprising a. bottom section, integral side and end sections, an auxiliary infolding side section integral with one of said side sections, a cover section united hingedly to the other side section, and corner portions integral with adjacent side and end sections, and each divided into sections by diagonal scoring, to permit said corner sections to infold upon each other and upon the adjacent end section, to positively prevent the spreading apart of the outer portions of the opposite side sections adjacentto thev end sections, said end sections being provided at their outer ends with end locking sections hinged thereto and foldable over said infolding corner sections in the erected position of the box, each of said locking sections being provided with an auxiliary bottom engaging locking section of greater extent transversely of the box than the bottom section to provide lateral locking wedge portions for eii'ect-ing a frictional and wedging engagement with the opposite side sections adjacent totheir union with the bottom.

6. An instantly erectable knockdown paper box comprising a bottomy section, integral side and end sections, an auxiliary infolding side section integral with one of said side sections, acover section united hingedly to the other side section. and corner portions integral with adjacent side and end sections and each divided into sections by diagonal scoring, to permit said corner sections to infold upon each other and upon the adjacent end section, to positively prevent the spreading apart of the outer portions oi.' the opposite side sections adjacent to the end sections, said end sections being provided at their outer ends with end locking sections hinged thereto and foldable over said ini'olding corner sections in the erected position of the box. each of said locking sections being provided with locking edges for i'rictlonally engaging the opposite side sections adjacent to the infoldlng corner sections, said auxiliary infolding side section being cut away at each end to provide a locking shoulder to interlock with the' adjacent ends of said locking sections, each ot said locking sections being provided. with an auxiliary bottom engaging locking section of greater extent transversely of the box than the bottom section to portions for effecting a frictional and engagement with the opposite side sections adjacent to their union with the bottom, the comer sectionsconnected with the end sections-and tolding thereon being permanently secln'ed thereto.

provide lateral locking wedge4 namaonoss. 15 

